M31: Other necrotizing vasculopathies

M31.5: Giant cell arteritis with polymyalgia rheumatica

Arteries are blood vessels that transport blood away from the heart. They supply all the tissue in the body with oxygen-rich blood. With this disorder, your immune system attacks the body’s own arteries. Arteries can become inflamed as a result. Inflamed arteries can get narrow.

When arteries for the head become inflamed and get narrow, you may get pain in your head, in your temples, and when chewing. The arteries that supply the eyes may also get inflamed. This may result in impaired vision or blindness, for example.

When arteries for particular muscles get narrow, the oxygen supply to the affected muscles may become inadequate. As a result, you can get muscular pain in your shoulder or in your hips. Muscles in your arms or legs can also get sore.